package voiceroomrocket

import (
	"context"
	"net/http"
	"strings"
	"time"

	"chatapp3-golang/internal/model"
)

// ListRewardPopups 返回当前用户未读中奖弹窗记录。
func (s *Service) ListRewardPopups(ctx context.Context, user AuthUser, roomID int64) (*RewardPopupResponse, error) {
	sysOrigin := s.normalizeSysOrigin(user.SysOrigin)
	query := s.repo.DB.WithContext(ctx).
		Where("sys_origin = ? AND user_id = ? AND popup_status = ?", sysOrigin, user.UserID, popupStatusUnread).
		Order("create_time DESC, id DESC").
		Limit(100)
	if roomID > 0 {
		query = query.Where("room_id = ?", roomID)
	}
	var rows []model.VoiceRoomRocketRewardRecord
	if err := query.Find(&rows).Error; err != nil {
		return nil, err
	}
	records := toRewardRecordViews(rows, s.mapUserProfiles(ctx, rewardRecordUserIDs(rows)))
	return &RewardPopupResponse{Records: records}, nil
}

// AckRewardPopups 标记中奖弹窗为已读。
func (s *Service) AckRewardPopups(ctx context.Context, user AuthUser, req AckRewardPopupsRequest) error {
	if len(req.RewardRecordIDs) == 0 {
		return NewAppError(http.StatusBadRequest, "missing_reward_record_ids", "rewardRecordIds is required")
	}
	ids := make([]int64, 0, len(req.RewardRecordIDs))
	for _, id := range req.RewardRecordIDs {
		if id.Int64() > 0 {
			ids = append(ids, id.Int64())
		}
	}
	if len(ids) == 0 {
		return NewAppError(http.StatusBadRequest, "missing_reward_record_ids", "rewardRecordIds is required")
	}
	return s.repo.DB.WithContext(ctx).
		Model(&model.VoiceRoomRocketRewardRecord{}).
		Where("sys_origin = ? AND user_id = ? AND id IN ?", s.normalizeSysOrigin(user.SysOrigin), user.UserID, ids).
		Updates(map[string]any{
			"popup_status": popupStatusRead,
			"update_time":  time.Now(),
		}).Error
}

// PageRewardRecords 返回用户最近中奖记录。
func (s *Service) PageRewardRecords(ctx context.Context, user AuthUser, roomID int64, cursor int, limit int) (*RewardRecordPageResponse, error) {
	cursor, limit = normalizePage(cursor, limit)
	snapshot, err := s.loadConfig(ctx, user.SysOrigin)
	if err != nil {
		return nil, err
	}
	keepDays := snapshot.RewardRecordKeepDays
	if keepDays <= 0 {
		keepDays = defaultRewardRecordKeepDays
	}
	startAt := time.Now().AddDate(0, 0, -keepDays)
	query := s.repo.DB.WithContext(ctx).
		Where("sys_origin = ? AND user_id = ? AND create_time >= ?", snapshot.SysOrigin, user.UserID, startAt).
		Order("create_time DESC, id DESC").
		Offset((cursor - 1) * limit).
		Limit(limit)
	if roomID > 0 {
		query = query.Where("room_id = ?", roomID)
	}
	var rows []model.VoiceRoomRocketRewardRecord
	if err := query.Find(&rows).Error; err != nil {
		return nil, err
	}
	records := toRewardRecordViews(rows, s.mapUserProfiles(ctx, rewardRecordUserIDs(rows)))
	resp := &RewardRecordPageResponse{
		Records: records,
		Cursor:  cursor,
		Limit:   limit,
	}
	if len(records) == 0 {
		resp.EmptyReason = "仅展示最近 35 天的记录"
	}
	return resp, nil
}

// PageRoomRewardRecords 返回房间内某次火箭发射的全部中奖记录。
func (s *Service) PageRoomRewardRecords(ctx context.Context, user AuthUser, roomID int64, launchNo string, cursor int, limit int) (*RewardRecordPageResponse, error) {
	cursor, limit = normalizePage(cursor, limit)
	snapshot, err := s.loadConfig(ctx, user.SysOrigin)
	if err != nil {
		return nil, err
	}
	keepDays := snapshot.RewardRecordKeepDays
	if keepDays <= 0 {
		keepDays = defaultRewardRecordKeepDays
	}
	startAt := time.Now().AddDate(0, 0, -keepDays)
	launchNo = strings.TrimSpace(launchNo)
	if launchNo == "" {
		query := s.repo.DB.WithContext(ctx).
			Model(&model.VoiceRoomRocketRewardRecord{}).
			Where("sys_origin = ? AND create_time >= ? AND launch_no <> ?", snapshot.SysOrigin, startAt, "").
			Order("create_time DESC, id DESC").
			Limit(1)
		if roomID > 0 {
			query = query.Where("room_id = ?", roomID)
		}
		var launchNos []string
		if err := query.Pluck("launch_no", &launchNos).Error; err != nil {
			return nil, err
		}
		if len(launchNos) == 0 {
			return &RewardRecordPageResponse{Records: []RewardRecordView{}, Cursor: cursor, Limit: limit}, nil
		}
		launchNo = launchNos[0]
	}

	query := s.repo.DB.WithContext(ctx).
		Where("sys_origin = ? AND launch_no = ? AND create_time >= ?", snapshot.SysOrigin, launchNo, startAt).
		Order("create_time DESC, id DESC").
		Offset((cursor - 1) * limit).
		Limit(limit)
	if roomID > 0 {
		query = query.Where("room_id = ?", roomID)
	}
	var rows []model.VoiceRoomRocketRewardRecord
	if err := query.Find(&rows).Error; err != nil {
		return nil, err
	}
	records := toRewardRecordViews(rows, s.mapUserProfiles(ctx, rewardRecordUserIDs(rows)))
	return &RewardRecordPageResponse{Records: records, Cursor: cursor, Limit: limit}, nil
}

// PageAdminLaunchRecords 返回后台发射记录。
func (s *Service) PageAdminLaunchRecords(ctx context.Context, sysOrigin string, roomID int64, cursor int, limit int) (*LaunchRecordPageResponse, error) {
	cursor, limit = normalizePage(cursor, limit)
	query := s.repo.DB.WithContext(ctx).
		Where("sys_origin = ?", s.normalizeSysOrigin(sysOrigin)).
		Order("launch_time DESC, id DESC").
		Offset((cursor - 1) * limit).
		Limit(limit)
	if roomID > 0 {
		query = query.Where("room_id = ?", roomID)
	}
	var rows []model.VoiceRoomRocketLaunch
	if err := query.Find(&rows).Error; err != nil {
		return nil, err
	}
	records := make([]LaunchRecordView, 0, len(rows))
	for _, row := range rows {
		records = append(records, toLaunchRecordView(row))
	}
	return &LaunchRecordPageResponse{Records: records, Cursor: cursor, Limit: limit}, nil
}

// PageAdminRewardRecords 返回后台奖励记录。
func (s *Service) PageAdminRewardRecords(ctx context.Context, sysOrigin string, roomID int64, userID int64, grantStatus string, cursor int, limit int) (*RewardRecordPageResponse, error) {
	cursor, limit = normalizePage(cursor, limit)
	query := s.repo.DB.WithContext(ctx).
		Where("sys_origin = ?", s.normalizeSysOrigin(sysOrigin)).
		Order("create_time DESC, id DESC").
		Offset((cursor - 1) * limit).
		Limit(limit)
	if roomID > 0 {
		query = query.Where("room_id = ?", roomID)
	}
	if userID > 0 {
		query = query.Where("user_id = ?", userID)
	}
	if grantStatus != "" {
		query = query.Where("grant_status = ?", grantStatus)
	}
	var rows []model.VoiceRoomRocketRewardRecord
	if err := query.Find(&rows).Error; err != nil {
		return nil, err
	}
	records := toRewardRecordViews(rows, s.mapUserProfiles(ctx, rewardRecordUserIDs(rows)))
	return &RewardRecordPageResponse{Records: records, Cursor: cursor, Limit: limit}, nil
}

func rewardRecordUserIDs(rows []model.VoiceRoomRocketRewardRecord) []int64 {
	seen := make(map[int64]struct{}, len(rows))
	userIDs := make([]int64, 0, len(rows))
	for _, row := range rows {
		if row.UserID <= 0 {
			continue
		}
		if _, ok := seen[row.UserID]; ok {
			continue
		}
		seen[row.UserID] = struct{}{}
		userIDs = append(userIDs, row.UserID)
	}
	return userIDs
}